You really don't want to keep running in Wine, you're getting database errors (db.log). You probably developed these rituals of transferring to a fresh install to cope with database corruption. If there is a way to lose unconfirmed blocks, it would have to be the database errors. Any problems you find in the Linux build can be fixed. The Wine incompatibility deep inside Berkeley DB is unfixable. I think GCC 4.3.3 on the Linux build optimized the SHA-256 code better than the old GCC 3.4.5 on Windows. When I was looking for the best SHA-256 code, there was a lot of hand tuned highly optimized SHA1 code available, but not so much for SHA-256 yet. I should see if I can upgrade MinGW to 4.3.x to get them on a level playing field. Liberty Standard wrote: